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FASS FUEL PUMP PULSING

Discussion in 'Intakes and Exhausts' started by yodamoga66, May 9, 2008.

  1. yodamoga66

    yodamoga66 Recruit

    12
    0
    May 9, 2008
    Chicago land, il
    A couple days ago my fass 150 started pulsing. Could it just be my tune (EFI)?
     
  2. BudTX

    BudTX Edjumacated Redneck

    At idle, or just with the pump turned on and the engine off?
     
  3. BudTX

    BudTX Edjumacated Redneck

    BTW, I moved this to Intakes and Exhausts, as that includes discussions on Intakes, Exhausts, Lift Pumps, Fuel System Upgrades. :)
     
  4. yodamoga66

    yodamoga66 Recruit

    12
    0
    May 9, 2008
    Chicago land, il
    Sorry I always post wrong. It pulses at idle with engine running or not running.
     
  5. BudTX

    BudTX Edjumacated Redneck

    Hmmm. My FASS will kind of make a pulsing noise when I first turn the ignition and the fuel "loads up" before I start the engine.

    Did the pulse coincide with your changing an EFI Live tune?
     
  6. yodamoga66

    yodamoga66 Recruit

    12
    0
    May 9, 2008
    Chicago land, il
    I'm not sure when it started.
     
  7. BudTX

    BudTX Edjumacated Redneck

    One more thought. I wonder if your filters are getting gunked up, and the pump is having to work harder to pull fuel through?
     
  8. schulte

    schulte ACCELLERANT!!!

    420
    0
    May 4, 2008
    Southern CT
    If it happens when your engine is off, your EFI tune isn't causing it.
     
  9. hoot

    hoot Recruit

    150
    0
    May 10, 2008
    SE PA
    Mine makes all kinds of music. Very strange sounding pump.
     

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